Hydraulic Tappets Disassemble And Assemble; Oil Pump Bore Depth; Checking Cylinder Head Flatness; Disassembly And Assembly - Jeep 200 Cherokee Service Manual

XJ
REMOVAL AND INSTALLATION (Continued)
Fig. 71 Oil Pump Bore Depth
(35) Install the vibration damper. Refer to vibra-
tion damper removal and installation in this section.
(36) Install the cylinder heads. Refer to cylinder
head removal and installation in this section.
(37) Install the rocker arms and push rods. Refer
to rocker arm and push rod removal and installation
in this section.
(38) Install the cylinder head cover. Refer to cylin-
der head cover removal and installation in this sec-
tion.
(39) Install the accessary drive system.
(40) Install the engine in vehicle. Refer to engine
removal and installation in this section.
(41) Fill engine with the correct amount of fluids
specified.
(42) Connect the negativre battery cable.

DISASSEMBLY AND ASSEMBLY

HYDRAULIC TAPPETS
DISASSEMBLE
(1) Pry out plunger retainer spring clip.
(2) Clean varnish deposits from inside of tappet
body above plunger cap.
(3) Invert tappet body and remove plunger cap,
plunger, check valve, check valve spring, check valve
retainer and plunger spring. Check valve could be
flat or ball.
2000 JEEP CHEROKEE
ASSEMBLE
(1) Clean all tappet parts in a solvent that will
remove all varnish and carbon.
(2) Replace tappets that are unfit for further ser-
vice with new assemblies.
(3) If plunger shows signs of scoring or wear,
install a new tappet assembly. If valve is pitted, or
valve seat on end of plunger is prevented from seat-
ing, install a new tappet assembly.
(4) Assemble tappets.

CLEANING AND INSPECTION

CYLINDER HEAD
CLEANING
Thoroughly clean the engine cylinder head and cyl-
inder block mating surfaces. Clean the intake and
exhaust manifold and engine cylinder head mating
surfaces. Remove all gasket material and carbon.
Check to ensure that no coolant or foreign material
has fallen into the tappet bore area.
Remove the carbon deposits from the combustion
chambers and top of the pistons.
INSPECTION
Use a straightedge and feeler gauge to check the
flatness of the engine cylinder head and block mating
surfaces (Fig. 72).
Minimum cylinder head thickness 89.95mm (3.541
in.)
CAUTION: If only one cylinder head is found to be
distorted and requires machining, it will also be
necessary to machine the remaining cylinders
heads and end plates by a corresponding amount
to maintain correct cylinder alignment.

ROCKER ARMS AND PUSH RODS

CLEANING
Clean all the components (Fig. 73) with cleaning
solvent.
Fig. 72 Checking Cylinder Head Flatness
ENGINE 9 - 43